muddyearthy odor from plastic bottles used for packaging medicine or in wine bottle corks, stinky sulfurous smell in hand lotion, oxidized burnt hair aroma in dairy offodors destroy consumer confidence and present challenging problems for the food beverage cosmeticspackaging industries. odors frequently are intermittent, are perceived differently by individuals various descriptors, and are difficult to reproduce. sources may be one or many trace level parts per million, &mugml, or ultratrace level parts per billion, ngml, or lower aroma active chemicals introduced during manufacturing, shipment, or storage. to add to the complexity of the problem, often it is unclear whether offodors
